* {box-sizing: border-box;}
body{margin: 0;}
form {
  position: relative;
  width: 320px;
  margin: 0 auto;
}
.d1 input {
  width: 100%;
  height: 42px;
  padding-left: 10px;
  border: 2px solid #19cf8a;
  outline: none;
  color: #9E9C9C;
}
.d1 button {
  position: absolute;
  top: 0;
  right: 0px;
  width: 42px;
  height: 42px;
  border: none;
  background: #19cf8a;
  cursor: pointer;
}
.d1 button:before {
  content: "\f002";
  font-family: FontAwesome;
  font-size: 16px;
  color: #F9F0DA;
}